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Literature DB >> 2966889

Ribosomal DNA inheritance and recombination in Neurospora crassa.

Abstract

The genetic segregation of ribosomal DNA (rDNA) in Neurospora crassa was analyzed by exploiting restriction fragment length polymorphisms in the nontranscribed spacer (NTS) sequences of nine laboratory wild-type strains and wild-collected strains. In an analysis of random spore progeny from seven crosses, and of ordered tetrads from two of those crosses the rDNA was shown to be inherited in a simple, stable Mendelian fashion, exhibiting an approximately 1:1 ratio of the two parental rDNA types. No meiotic recombinants were detected among the progeny, indicating that non-sister-chromatid crossing over is highly suppressed in the rDNA region. The basis for this suppression of meiotic recombination is not known.

Entities: Species

Mesh：

Substances：
DNA, Ribosomal

Year: 1988 PMID： 2966889 DOI： 10.1007/bf00425714

Source DB: PubMed Journal: Mol Gen Genet ISSN： 0026-8925

26 in total

1. Electron microscopic observations on the meiotic karyotype of diploid and tetraploid Saccharomyces cerevisiae.

Authors: B Byers; L Goetsch
Journal: Proc Natl Acad Sci U S A Date: 1975-12 Impact factor: 11.205

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Authors: R Krumlauf; G A Marzluf
Journal: Biochemistry Date: 1979-08-21 Impact factor: 3.162

3. Unusual organization and lack of recombination in the ribosomal RNA genes of Coprinus cinereus.

Authors: J Rhodes Cassidy; D Moore; B C Lu; P J Pukkila
Journal: Curr Genet Date: 1984-10 Impact factor: 3.886

4. Cytological characterization of NOR in the bivalent of Saccharomyces cerevisiae.

Authors: T Kuroiwa; S Miyamura; S Kawano; M Hizume; A Tho-E; I Miyakawa; N Sando
Journal: Exp Cell Res Date: 1986-07 Impact factor: 3.905

5. Investigation of Homologous Crossing over and Sister Chromatid Exchange in the Wheat Nor-B2 Locus Coding for Rrna and Gli-B2 Locus Coding for Gliadins.

Authors: J Dvorák; R Appels
Journal: Genetics Date: 1986-08 Impact factor: 4.562

6. Distribution of Nonstructural Variation between Wheat Cultivars along Chromosome Arm 6Bp: Evidence from the Linkage Map and Physical Map of the Arm.

Authors: J Dvorák; K C Chen
Journal: Genetics Date: 1984-02 Impact factor: 4.562

7. GELYSIS: Pascal-implemented analysis of one-dimensional electrophoresis gels.

Authors: P J Russell; R E Crandall; R Feinbaum
Journal: Nucleic Acids Res Date: 1984-01-11 Impact factor: 16.971

8. Unequal crossing over in the ribosomal DNA of Saccharomyces cerevisiae.

Authors: J W Szostak; R Wu
Journal: Nature Date: 1980-04-03 Impact factor: 49.962

9. Organization of the ribosomal ribonucleic acid genes in various wild-type strains and wild-collected strains of Neurospora.

Authors: P J Russell; S Wagner; K D Rodland; R L Feinbaum; J P Russell; M S Bret-Harte; S J Free; R L Metzenberg
Journal: Mol Gen Genet Date: 1984

10. Reversal of a Neurospora translocation by crossing over involving displaced rDNA, and methylation of the rDNA segments that result from recombination.

Authors: D D Perkins; R L Metzenberg; N B Raju; E U Selker; E G Barry
Journal: Genetics Date: 1986-11 Impact factor: 4.562

6 in total

1. Frequent changes in the number of reiterated ribosomal RNA genes throughout the life cycle of the basidiomycete Coprinus cinereus.

Authors: P J Pukkila; C Skrzynia
Journal: Genetics Date: 1993-02 Impact factor: 4.562

2. Chromosome dynamics in rad12 mutants of Coprinus cinereus.

Authors: M A Ramesh; M E Zolan
Journal: Chromosoma Date: 1995-11 Impact factor: 4.316

3. Expansion and contraction of the nucleolus organizer region of Neurospora: changes originate in both proximal and distal segments.

Authors: D K Butler; R L Metzenberg
Journal: Genetics Date: 1990-10 Impact factor: 4.562